Gilman test

The Gilman test is a chemical test for the detection of Grignard reagents and organolithium reagents ^{[1] [2]}.

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A 0.5 mL sample is added to a 1% solution of Mischler's ketone in benzene or toluene. To this solution is added 1 mL of water for hydrolysis to take place and then several drops of 0.2% iodine in glacial acetic acid. If the color of the resulting solution becomes a greenish-blue then the original sample did contain the organometallic species.

References

1. ^ A qualitative color test for the Grignard reagent, Henry Gilman and F. Schulze, J. Am. Chem. Soc., 1925; 47(7) pp 2002 - 2005, doi:10.1021/ja01684a032
2. ^ Organic Syntheses, Coll. Vol. 3, p.601 (1955), Vol. 28, p.75 (1948). Article